NAME DESCRIPTION

Departamento de Matemáticas My department.

Facultad de Ciencias, UNAM Mathematics, Physics, Biology, Computer Science, and more!

Universidad Nacional Autónoma de México My institution.

Arxiv Recent articles in the fields of mathematics.

Mathscinet Math articles Data Base. Suscription required.

Diccionario de la Real Academia Española ¡En español!

Dicionário de Português Priberam Fala!

Cambridge Dictionary Just in case.